.w100{
    width: 100%;
}
.h100{
    height: 100%;
}

.w10{ width: 10%; }
.w20{ width: 20%; }
.w30{ width: 30%; }
.w40{ width: 40%; }
.w50{ width: 50%; }

.center{
    display: flex;
    align-content: center;
    align-items: center;
    justify-content: center;
    justify-items: center;
}
.right{
    display: flex;
    float: right;
}
.left{
    display: flex;
    float: left;
}
.content{
    width: 100%;
    height: 100%;
}